Motor Controllers Soft Starting/Soft Stopping Types RSC 4.../RSO 12.., RSC 60.../RSO 16..

Transcription

1 otor Controllers Soft Starting/Soft Stopping Types RSC 4..../RSO 12.., RSC 60.../RSO 16.. Control and output modules for soft starting/stopping of 3-phase induction motors Rated operational current: 3 x 10, 25, 50, 90 and 110 AACrms Rated operational : Up to 600 VACrms Control range: 10 to 32 VDC LED-indication for line ON and load ON Product Description The control modules RSC 4. HD12-. and RSC 60 HD 16-. are used with output modules RSO 12.. and RSO 16.. to achieve soft starting and soft stopping of 3-phase induction motors. When the motor is fully operating, the module delivers a signal which can be used to connect a contactor in parallel with the output module, thereby limiting the power dissipation of the device and eliminating the need for a large heatsink. The control module also features LED indication for line ON and load ON. The power unit S1 has a built-in control relay for shunting the motor controller when soft starting is performed. Ordering Key Solid State Relay Soft starting/stopping Control module Output module Rated operational Rated operational current Control Non-rep. peak Rated operational frequency RSC 40 HD 12-5 RSO 1210 Type Selection Type Rated operational Control Non-rep. Rated operational frequency C: Control module 40: 120/208 VACrms HD: 10 to 32 VDC 12: 1200 V p 5: 50 Hz ± 3 Hz 230/400 VACrms 16: 1600 V p 6: 60 Hz ± 3 Hz 48: 230/400 VACrms 280/480 VACrms 60: 347/600 VACrms Type Rated operational current Non-rep. O: Output module 10: 3 x 10 AACrms 12: 1200 V p 25: 3 x 25 AACrms 16: 1600 V p 50: 3 x 50 AACrms 90: 3 x 90 AACrms 110: 3 x 110 AACrms Selection Guide Rated operational Control Rated operational frequency 50 Hz ± 3 Hz 60 Hz ± 3 Hz 120/208 VACrms - 230/400 VACrms 10 to 32 VDC RSC 40 HD 12-5 RSC 40 HD /480 VACrms 10 to 32 VDC RSC 48 HD 12-5 RSC 48 HD /600 VACrms 10 to 32 VDC RSC 60 HD 16-6 Non-rep. Rated operational current 10 AACrms 25 AACrms 50 AACrms 90 AACrms 110 AACrms 1200 V p RSO 1210 RSO 1225 RSO 1250 RSO 1290 RSO V p RSO 1650 RSO 1690 RSO Specifications are subject to change without notice 1

2 General Specifications Control odule RSC40HD12-5 RSC40HD12-6 RSC48HD12-5 RSC48HD12-6 RSC60HD16-6 Operational range Line to line [VACrms] 220 to to to to to 690 Non-rep. peak 1200 V p 1200 V p 1200 V p 1200 V p 1600 V p Operational frequency range 47 to 53 Hz 57 to 63 Hz 47 to 53 Hz 57 to 63 Hz 57 to 63 Hz Supply no output current 80 ma 80 ma 80 ma 80 ma 80 max. output current 230 ma 230 ma 230 ma 230 ma 230 ma Approval CSA CSA CSA CSA CSA Control Input Specifications Control range 10 to 32 VDC Ramp up function 8 VDC Ramp down function 3 VDC Input current 6 32 VDC Adjust. starting torque 0 to 75% Adjust. ramp up time 1 to 20 s Adjust. ramp down time 1 to 20 s reset time 1 cycle Response time (input to trigger outputs) 50 ms Control Output Specifications inimum output Output current short-circuit protected Thermal Specifications Operating temperature Storage temperature power less 3.5 VDC 150 ma DC Insulation Control odule Rated insulation Input to trigger outputs -20 to + (-4 to +176ºF) -40 to +100 C (-40 to 212ºF) 4000 VACrms Operation Diagram otor Starting torque Ramp up time Soft starting Ramp down time Soft stopping OFF ode of Operation The control modules RSC /RSC are used with the output module RSO 12.. or RSO 16.. to achieve soft starting and soft stopping of 3-phase induction motors. Soft starting is achieved by increasing the motor in accordance with the setting of the ramp up time potentiometer within the range of 1 to 20 s. Soft stopping is achieved by decreasing the motor in accordance with the setting of the ramp down time potentiometer within the range of 1 to 20 s. The starting torque potentiometer makes it possible to adjust the starting level of the motor to a value at which the motor starts to rotate immediately when soft starting is initiated. When the motor is fully operating, an output signal appears which can be used to connect a bypassing relay or contactor in parallel to the output module, thus avoiding the need for cooling. General Specifications Output odule 1200 V p types: RSO 1210 RSO 1225 RSO 1250 RSO 1290 RSO V p types: RSO 1650 RSO 1690 RSO Operational range Line to line [VACrms] 1200 V p 220 to to to to to V p 220 to to to Specifications are subject to change without notice

3 General Specifications Output odule (Cont.) 1200 V p types: RSO 1210 RSO 1225 RSO 1250 RSO 1290 RSO V p types: RSO 1650 RSO 1690 RSO Approval CSA CSA CSA CSA CSA (ax 600 VAC) (ax 600 VAC, (ax 600 VAC, ax 50 AAC) ax 50 AAC) Output Specifications Output odule %1200 V p types: RSO 1210 RSO 1225 RSO 1250 RSO 1290 RSO V p types: RSO 1650 RSO 1690 RSO Rated operational current AC 1 16 Arms 25 Arms 50 Arms 90 Arms 110 Arms AC 3 3 Arms 5 Arms 15 Arms 30 Arms 40 Arms Non-rep. peak RSO V p 1200 V p 1200 V p 1200 V p 1200 V p RSO V p 1600 V p 1600 V p Off-state leakage current 10 marms 10 marms 10 marms 25 marms 25 marms On-state drop 1.6 Vrms 1.6 Vrms 1.6 Vrms 1.8 Vrms 1.8 Vrms I 2 t for fusing t=1-10 ms 130 A 2 s 310 A 2 s 1800 A 2 s 5000 A 2 s A 2 s RSO A 2 s Critical di/dt 50 A/µs 50 A/µs 50 A/µs 50 A/µs 50 A/µs Non-rep. surge current t=20 ms 160 A p 250 A p 600 A p 1000 A p 1500 A p RSO A p Thermal Specifications Output odule 1200 V p RSO 1210 RSO 1225 RSO 1250 RSO 1290 RSO V p RSO 1650 RSO 1690 RSO Operating temperature -20 to to to to to + Storage temperature -40 to +100 C -40 to +100 C -40 to +100 C -40 to +100 C -40 to +100 C Junction temperature 125 C 125 C 125 C 125 C 125 C R th junction-case 0.7 K/W 0.5 K/W 0.25 K/W 0.1 K/W 0.09 K/W Insulation Output odule Rated insulation Output to case 4000 VACrms Wiring Diagram ounting and connection of control module Functional Diagram Control input and output ains input Supply/Control input/output output Specifications are subject to change without notice 3

4 Heatsink Dimensions (load current versus ambient temperature) RSO 1210 RSO 1225 [K/W] [K/W] RSO [K/W] RSO 1290, RSO RSO 1690, RSO Heatsink/Thermal resistance [K/W] Heatsink Selection Carlo Gavazzi Heatsink (see Accessories) No heatsink required RHS 300 Assy or backplate RHS 301 Assy RHS 301 F Assy Consult your distributor R th s-a > 8.0 K/W 5.0 K/W 0.8 K/W 0.25 K/W < 0.25 K/W Compare the value found in the load current versus temperature chart with the standard heatsink values and select the heatsink with the next lower value. It is recommended to protect the solid state relay against overheating. Therefore the chart also states the maximum switching temperature (70, 80 or 90 C) for the optional temperature limit switch. 4 Specifications are subject to change without notice

5 Dimensions RSO... RSC.. HD..-. * * * Temperature limit switch * * Heat sink compound = ± 0.4 mm * = ± 0.5 mm Housing Specifications Weight RSO 1210, 1225, 1250, 1650 Approx. 275 g RSO 1290, 1690, 12110, Approx. 385 g Housing material Noryl, glass-reinforced Colour Black Base 50 A Aluminium, 90 A Copper, nickel-plated Potting compound Polyurethane, black Relay ounting screws 5 ounting torque 1.5 Nm Control terminal ounting screws 3 ounting torque 0.5 Nm terminal ounting screws 5 x 6 ounting torque 1.5 Nm Accessories Heatsinks Varistors Fuses Temperature limit switch For further information refer to General Accessories. Applications The output module RSO is recommended for motors up to V. The RSO..90 and RSO..110 are designed for use in applications with high surge current conditions. Care must be Example 1: dissipation - RSO 12110: Example: I load = 40 Arms = 111 W See previous page. Example 2: otor: 3 kw, ns = 1500 rpm, 3 x 400 VAC, 4-pole T A: 50 C Starting time: 5 s For 50 Hz applications RSC 48HD 12-5 must be used. From the "Selection Guide" (4-pole motors) it can be seen that the RSO 1250, RSO 1225, RSO 1210 modules can be taken to ensure proper heatsinking when the relays are to be used at high nominal currents. Adequate electrical connection between relay terminals and cable must be ensured. used: RSO 1250, if the starting current is unknown for 5 s (starting time) and a large safety margin is required, RSO 1225/1210, if during starting the current is lower than the values stated in the "Overload Table". For RSO 1210 the maximum current is 17 A for 5 s, and for RSO 1225 the maximum current is 39 A for 5 s. Specifications are subject to change without notice 5

6 Applications (cont.) In this application the starting current is measured to be only 20 A with a starting time of 5 s. Consequently, an RSO 1210 is selected. ains-controlled soft starting Soft-starting and soft stopping The min. heatsink is 1K/W, and the power dissipation is 25 W. This gives: Control module: RSC 48HD 12-5 Output module: RSO 1210 Heatsink:1K/W Note: The thermal conditions have now been designed for the nominal motor current. This means that the starting time should be less than 10% of the operating time of the motor. In case the starting time exceeds 10% of the operating time of the motor, see Applications for RRO 12.. Transient protection With an unstabilized mains, transients may occur. Since these transients could have a high energy content, it is advisable to use varistors to protect the output module. otor Varistor Varistor size [V] [Vrms] [mm] Ø 20 Connection to the mains Since no motor protective circuitry is included in the RSC/RSO, the motor must be protected in the usual way, i.e. either by a thermal relay, a PTC-resistor or a Klixon bimetal temperature switch near the motor windings. When the main contactor C1 switches on, the motor will softstart. When C1 switches off, the SSR automatically resets. Note: The induced from the motor will prolong the reset, depending on motor type and load. Input-controlled soft starting When the main contactor C1 switches on, and the control switch S1 is closed, the motor will soft-start. When S1 is opened, the motor will softstop. anual start - stop function If desired, an external control circuit for manual starting and stopping can be created by using push buttons. When the start button is pressed and held until the lamp B1 is lit (indicating that the motor is now running), a holding contact is made. The motor will stop after activating the stop button Ø Ø Ø 20 Overload protection by thermal relay 5/L3 Start The varistors P1, P2 and P3 should be mounted in parallel to the output semiconductors between the terminals of the line (1/l 1-2/T 1, 3/L 2-4/T 2, 5/L 3-6/T 3). If short circuit protection is required, fuses F1 to F3 should be ultrafast and selected according to the load integral (I 2 t) of the RSO output module and the motor load. When the main contactor C1 switches ON, and the control switch S1 is closed, the motor will soft-start. When either C1 or S1 switches OFF, the SSR will automatically reset. 6/T3 B1 Stop 6 Specifications are subject to change without notice

7 Applications (cont.) Shunting the output module This circuit limits the power dissipation of the SSR and consequently eliminates the need for a large heatsink, i.e. the power dissipation is limited to the starting and stopping periods. This is achieved by switching a contactor with the output signal from the control module RSC. In this case C2 is carrying - not switching - the current and can therefore be rated on the basis of the thermal current data of the contacts, which will result in a smaller contactor. Interconnection of soft starting, braking and reversing controllers Forward Reverse Stop Note: However, if C2 fails, the temperature on the output module RSO heatsink may rise to an unacceptable level. It is therefore advisable to protect the RSO by means of an optional temperature limiting switch T1, which can be inserted in the housing of the output module. See data sheet on unit S 1. F1 - F5: Ultrafast fuses with I 2 t rated lower than the I 2 t value of the output modules. P1 - P7: Varistors for 420 V mains with a diameter of 20 mm. Selection Guide 400 VACrms and 480 VACrms motors Output module RSO 1210 RSO 1225 RSO 1250 RSO 1290 RSO ax. motor size 3 HP/2.2 kw 5 HP/4 kw 15 HP/11 kw 20 HP/15 kw 30 HP/22 kw 600 VACrms motors Output module RSO 1650 RSO 1690 RSO ax. motor size 15 HP 30 HP 40 HP Specifications are subject to change without notice 7